I've been called???

Really...I think you expect too much of me!!

haha.
I watched much of the Inside the Actors Studio clips, and I guess I didn't see her as a 'T'. I almost feel like people think Introverted feelers will be as emotional/'warm' as Extroverted feelers?? When the manner of expression is actually quite different...it's like a much 'quieter' and softer expression of feeling..not overt or exuberant. More controlled, for both the INFJ's and the ISFJ that I know. Again, at least until you get to know them well, and assuming they're being natural and aren't acting more extroverted than they really are. I didn't think Michelle was 'cold', I guess!

My impression of her was that she was: personable, poised, articulate, and seemed to have very good interpersonal skills, and could really navigate through conversation well, and expressed herself well. I think this could be ISFJ or INFJ. I guess I don't really see ISTJ displaying all of those interpersonal skills so smoothly? And I'm also having a hard time seeing a lot of 'T' qualities in her manner of expression, and what she's expressing. [Or perhaps I'm the only one viewing her in this light.

]
I'm not sure though about the N or S. I agree she has a sort of ethereal aura, especially when she's really thinking about something...but she also doesn't seem like she's holding back as much as an INFJ. So, I end this with: IxFJ.
Oh - and as for 'variety of interests/pursuits' = N, I don't think I agree with that. I think there are a lot of N's who become incredibly focused/absorbed in just one interest (I'm thinking more of the academic types). Also, Michelle could very well be a woman who doesn't want to outwardly display all of her interests, and is pursuing more personal hobbies, vs. causes. She mentioned the oil painting/psychiatry interests, and she mentioned how she loves woodworking and building things. [And by the way -- my INFJ friend is quite adept at building things - more so than her husband - and she sews her own clothing and even made an upholstered mini chaise-lounge for her dog

...so sensory activities don't have to equate to S-types only.]
Edit: ARG, I've been thinking about this almost nonstop for almost an hour.

The more I think about it, the less satisfied I am with ISFJ, because Michelle didn't seem driven to express minute details of everything, like my ISFJ friend does. Michelle seemed to be much more generalized in some of the things she was saying - painting with a broader stroke (which is what I really think the 'ethereal thing' is- so now I'm leaning more towards INFJ.

One who was extremely comfortable in her interview setting.